Hello!
On Thu, Dec 30, 2021 at 07:58:33AM +0000, Devashi Tandon wrote:
> upstream ext-authz-upstream-server {
> server 172.20.10.6:9006;
> keepalive 4;
> }
[...]
> However, when I create 100 simultaneous connections, they are
> all sent via a different source port which means that a new
> socket connection is created everytime.
That's expected behaviour: the keepalive directive specifies the
number of connections to cache, not the limit on the number of
connections to the upstream server. With many simultaneous
requests nginx will open additional connections as needed.
> How can I pipeline requests over 4 connections with keepalive
> configuration set to 4?
You cannot, pipelining is not supported by the proxy module.
If the goal is not pipelining but to limit the number of
connections to upstream servers, the "server ... max_conns=..." and
the "queue" directive as available in nginx-plus might be what you
want, see here:
http://nginx.org/en/docs/http/ngx_http_upstream_module.html#max_conns
http://nginx.org/en/docs/http/ngx_http_upstream_module.html#queue
Note well that such questions do not look like something related
to nginx development. A better mailing list for user-level
question would be ng...@nginx.org, see here:
http://nginx.org/en/support.html
Hope this helps.
--
Maxim Dounin
http://mdounin.ru/
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